DEPRESSION AND TREATMENT OF DEPRESSION | DEPRESSED PEOPLES

 Introduction of Depression :-

Moods naturally fluctuate and everyone experiences ups and downs in their lives, but in some cases mood swings can become long-term debilitating and can impair someone's ability to hold down a job or maintain meaningful relationships

It is estimated that about 10 percent of people will suffer from depression at some point in their lives, a mood disorder characterized by several symptoms:

feel sad

Desperate

Unmotivated

Overly tired

And loss of interest in once pleasurable activities known as anhedonia

Many people who has  depression also suffer from different problems like anxiety

Depression :-

Neuroimaging studies reveal that many brain circuits that normally regulate mood are dysregulated in depression. the amygdala  which is located deep in the brain, processes highly salient stimuli like rewards and potential threats.

In depression, the amygdala is overactive and overreacts to negative events. The amygdala, in turn, connects to a set of brain regions that fine-tune physiological and behavioral responses to emotional stimuli, including medial prefrontal cortex  hippocampus and

island

The hippocampus is involved in memory formation and, along with the prefrontal cortex, is particularly vulnerable to the effects of stress

Depressed people are more susceptible to stress, which can cause physical changes in the brain, including hippocampal atrophy

These and other changes in depressed people can cause inappropriate responses to emotional events

The medial prefrontal cortex is involved in regulating how strongly we respond to emotional stimuli

TREATMENT :-

Hippocampus and other areas of the brain also affected by treatments such as antidepressants, cognitive behavioral therapy, and electroconvulsive therapy

Animal models such as mice are essential to help us understand the cellular and molecular changes that underlie depression and develop better treatments

Although it is impossible to tell if a mouse is depressed

Mine under chronic stress shows some symptoms similar to depressed people

Such as anxiety-like behavior, less social interaction, and lack of interest in normally enjoyable activities. While not all human depression is stress-induced, these models can still shed light on the biology of depression and are the closest scientists can get to studying mice, since in humans, chronic stress can lead to atrophy of the hippocampus and prefrontal cortex in mice.

Studies in mice have also demonstrated altered neuronal plasticity in various brain regions, including the hippocampus, prefrontal cortex, amygdala, and nucleus accumbens

In the healthy hippocampus, experience can lead to changes in the connections between neurons, leading to learning, these changes are referred to as plasticity.

chronic stress can reduce this plasticity

Healthy brains continue to produce a new neurons in the part of the hippocampus

These new neurons slowly mature and integrate into circuits where they have a strong influence on hippocampal activity and behavior. Stress can also affect these new neurons . Their number decreased in stressed brains. These effects may result from reduced levels of neurotrophin proteins that enhance neuronal growth and plasticity. Reduced plasticity can prevent the hippocampus from being able to properly regulate the stress response, which can lead to a vicious cycle where stress perpetuates more stress. The hippocampus is particularly affected, but plasticity can be reduced elsewhere in the brain, and together these changes can contribute to other symptoms of depression such as dona Whether these cellular changes observed in mice are involved in human depression remains unclear

Many antidepressants that are available today rapidly increasing the amount of the neurotransmitters serotonin and norepinephrine in the synapse. However, improvement in symptoms in patients and mice usually does not occur until weeks after initiation of treatment. Although the reasons for this delay are not fully understood

Long-term treatment with antidepressants can over time reverse some of the changes induced by chronic stress, by increasing the expression of neurotrophins and restoring the plasticity of the hippocampus,

hippocampal plasticity in mice also promote by  nonchemical treatments of depression including electroconvulsive shock  .

Antidepressant treatment can also reverse stress-induced changes in other areas of the brain, including the prefrontal cortex and reward circuits, and different treatments can target different areas to improve symptoms. Recently, the drug ketamine has been found to have a rapid antidepressant effect

Effects in depressed patients as well as in rodent models with effects lasting several days The mechanism behind this mechanism This is an area of ​​active research Ketamine blocks a type of synaptic transmission leading to the activation of a number of signaling pathways and increasing the expression of neurotrophins these molecular changes result increased plasticity of the prefrontal cortex and hippocampus and likely contribute to the behavioral effects of ketamine.

Researchers may find new targets for treatment or new drugs that might work faster, more specifically, or more effectively than currently available treatments.

Disclaimer :-

This article about OVERTHINKING AND BEST WAYS TO OVERCOME OVERTHINKING is solely informative. This article's opinions and overview are drawn from a variety of online resources. The accuracy of the facts in this article is not guaranteed or promised by the author.

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